MESON Chess Problem Database

Problem Display
PID: 51612 (K2B4/5Bb1/4p1Pr/1pR1p2p/3Pk2p/n1P1Nb1P/4P1N1/1r2QR2 w - - 0 1)

Barrow, John Hugh

Manchester Weekly Times, 1915

K2B4/5Bb1/4p1Pr/1pR1p2p/3Pk2p/n1P1Nb1P/4P1N1/1r2QR2

#2

13 + 11

5257 Chess Problems by J H Barrow 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg6
      • 2.Bxg6#
    • 1...Bf8
      • 2.Rxe5#
    • 1...Sc4
      • 2.Qxb1#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sd6#
      • 1...Kf5+
        • 2.e4#
      • 1...Bxe2
        • 2.Qxe2#
      • 1...Bxg2
        • 2.Qxh4#
      • 1...Sxc4
        • 2.Qxb1#
      • 1...Bf8
        • 2.Rxe5#
      • 1...bxc4!
    • 1.Bxe6?
      • threat
        • 2.Bd5#
        • 2.Bf5#
      • 1...Bxe2
        • 2.Bf5#
      • 1...exd4
        • 2.Bf5#
      • 1...Bg4
        • 2.Bd5#
      • 1...Bxg2!
    • 1.Qd2?
      • threat
        • 2.Qd3#
        • 2.exf3#
      • 1...Rxf1
        • 2.Qd3#
      • 1...Bxg2
        • 2.Qd3#
      • 1...Rd1
        • 2.exf3#
      • 1...Bg4
        • 2.Qd3#
      • 1...Bxe2!
    • 1.Qxb1+?
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sxb1!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sd6#
      • 1...Kxf5+
        • 2.e4#
      • 1...Bxe2
        • 2.Qxe2#
      • 1...Bxg2
        • 2.Qxh4#
      • 1...exf5
        • 2.Bd5#
      • 1...Bf8
        • 2.Rxe5#
      • 1...Sc4
        • 2.Qxb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(j);OGATE,XP(J)::B(K),XR(j)
    • B(k);N_GUARD::R1(I),XP(g)
    • S(b);N_GUARD::QAB(A),XR(a)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • K(d);CHECK,OGATE,P_SPINB(c),P_SPINP(g),S_FLIGHT::P(C)
        • B(c);OGATE,P_SPINB(c),XP(C)::QAR2(A),XB(c)
        • B(c);N_GUARD,XS(D)::QAR(A),XP(e)
        • S(b);N_GUARD,XS(F)::QAB(A),XR(a)
        • B(k);N_GUARD::R1(I),XP(g)
      • Refutation
        • P(f);XS(F)
    • Try
      • B(K);XP(i)
      • Threat
        • DUALS(2)
      • Vars
        • B(c);XP(C)::B(K)
        • P(g);XP(H)::B(K)
        • B(c);::B(K)
      • Refutation
        • B(c);XS(D)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XR(B)::QAB1(A)
        • B(c);XS(D)::QAB1(A)
        • R(a);::P(C),XB(c)
        • B(c);::QAB1(A)
      • Refutation
        • B(c);XP(C)
    • Try
      • Q(A);CHECK,XR(a)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB(A),XS(b)
      • Refutation
        • S(b);XQ(A)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(d);CHECK,OGATE,P_SPINB(c),P_SPINP(g),S_FLIGHT,XS(F)::P(C)
      • B(c);OGATE,P_SPINB(c),XP(C)::QAR2(A),XB(c)
      • B(c);N_GUARD,XS(D)::QAR(A),XP(e)
      • P(i);OGATE,SBLOCK,XS(F)::B(K)
      • B(k);N_GUARD::R1(I),XP(g)
      • S(b);N_GUARD::QAB(A),XR(a)
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